Informar del error en el código fuente: Listbox to Listbox

//LISTBOX to LISTBOX
//transfer selected items from one listbox to another listbox
//Autor: Aitor Solozabal Merino
//Fecha: 23/01/2015
//HTML+CSS+JAVASCRIPT+JQUERY
//==================================================================
//SCHEMA:
// lis1 lis2
// +-----------+ +-----------+
// |option1 | [ movr> ] |option4 |
// |option2 | [ <movl ] |option5 |
// |option3 | [ allr>> ] | |
// | | [<<alll ] | |
// +-----------+ +-----------+
// [con1] [con2]
//==================================================================